I switched back to Windows for a while... and no signs of improvement. And what I see, is that preparation of a 320x320 map with 100 cities, 150 factories and 125 tourist attractions takes version 100.0 half a minute, while on 102.0, no matter which platform, it takes 3 hours. Also on netbook with VIA C7 1200/1GB and WinXP. That is abnormal, please help!